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Finding the Fourth Proportional to 683,928.38, 943,791.80 and 377,988.96

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Solution

The fourth proportional to 683,928.38, 943,791.80 and 377,988.96 is: 521,608.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,928.38 : 943,791.80 = 377,988.96 : x
  2. Step 2: Convert to fraction form
    683,928.38/943,791.80 = 377,988.96/x
  3. Step 3: Cross multiply
    683,928.38x = 943,791.80 × 377,988.96
  4. Step 4: Simplify right side
    683,928.38x = 356,742,880,938.53
  5. Step 5: Solve for x
    x = 356,742,880,938.53/683,928.38
  6. Step 6: Final answer
    x = 521,608.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.